My video or audio player has no sound

First please check your computer is correctly playing sound from other sources (such as YouTube or similar), If it is, then make sure the volume level is up on the FutureLearn player controls. The volume control is a short horizontal bar to the left of the main video progress bar, and should appear when you move your mouse near the speaker icon. Please drag the volume slider to the right to set it to maximum, as in this image.